• Note: For a product non conformity, correction might be understood as reworking the part, accepting the non-conformance through concession process, or ultimately scrapping it. For a system issue, it may include correcting the paper work or issuing a new purchase order. For a delivery issue, it may include air transportation instead of by truck or by ship, increasing production rate, etc Useful links: “Rootcause analysis and problem solving” by IAQG. Sources - "Rootcause analysis and problem solving" by IAQG.
• Note: These actions may be temporary and should remain in place until root cause(s) is(are) identified and permanent root cause corrective action(s) is(are) implemented and verified to be effective. Useful links: “Rootcause analysis and problem solving” by IAQG. Sources - "Rootcause analysis and problem solving" by IAQG.
Ishiwaka diagram, fishbone diagram or cause-and-effect diagram.
This tool helps determine the root causes of a problem and indicates possible causes of variation to increase knowledge of the process. As it presents an easy to read format it rapidly identifies areas for further analysis.
All the causes are usually grouped into major categories to identify sources of variation, the categories typically are: environment, material, method, equipment and people.
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